Furnace



A. C. OSBORN,. JR. FURNACE.

APPLICATION FILED JAN.26, 1920.

Patented June 15, 1920..

2 SHEETSSH-EET I- awuv/wtoz AL: Osborn Jr. WWW I I i I aumm A. C. OSBORN, JR.

FURNACE. APPLIICATION FILED JAN. 26. 1920.

1,343,470. Y Patented June 15",1920.

\ 2 SHEETS-SHEET 2- awuwtoa A 0 Osborn .Jr.

UNITED STATES PATENT OFFICE.

ALEXANDER C. OSBORN, JR, OF GLARKSBURG, WEST VIRGINIA.

FURNACE.

Specification of Letters Patent. Patented Jun 15 1920- Application filed January 26, 1920. Serial No. 353,961.

To all whom it may concern:

Be it known that I, ALEXANDER C. Os-

noizN, J r., a citizen of the United States, re-

member being pivoted with relation to the lower member to permit of easy access to the interior of the furnace.

A further object of the invention is to provide means for moving the upper member with relation to the lower member to open the furnace. V

A still further object of the invention is to provide novel means for connecting the stationary section of the fuel supply plpes to the movable section thereof, carried by the upper section of the furnace.

With the foregoing and other objectsm view which will appear as the'description proceeds, the invention resides in the combination and arrangement of parts'and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed without departing from the spirit of the invention.

Referring to the drawings Figure 1 illustrates a side elevatlonal view of a furnace constructed in accordance with the present invention, the upper section of the furnace being shown in cross section.

Fig. 2 illustrates a plan view of the furnace, portions of the upper section thereof being broken away.

Referring to the drawings in detail, the furnace includes the base 5, formed of suit- I able bricks, or other material employed in building furnace foundations.

Supported on the upper surface of the base 5, is a metallic support 6, preferably rectangular in formation, or of a design to conform with the design of the base and upper section of the furnace, it being of course obvious that the furnace may be cir- .cular if so desired. This support 6 is provided with spaced ears 7 formed at the rear thereof and apertured as at 8to receive the pivot pm 9 employed for connecting the upper section to the lower section to permit of pivotal movement of the upper section with relation to thelower section, so that the upper section may be moved to permit of easy access to the interior of the furnace, 1n the event that it becomes necessary to remove the contents of the furnace.

Disposed diametrically opposite each other, and formed integrally with the support 6, are the recessed portions 10, which accommodate the arms 11 and 12, which arms supportthe base 13, which base provldes the support for the crucible 1a which supports the metal in proper relation with the heating elements of the furnace.

The upper section of the furnace includes the metallic walls 15, each of which is prov ded adjacent its corners with apertured ears 16, the ears 16 of one wall being disposed. in. close proximity with the ears of the opposed wall, to receive the connecting bolts 17, which. pass through the apertures therein, and as shown, these bolts are relatively long and support the coiled springs 18, the coiled springs having one of their ends contacting with the nuts 19, which are capable of adjustment to adjust the tension of the springs 18 to exert a greater or less pressure on the side walls 15 of the upper section of the furnace.

WVithin the side walls 15 of the upper section, is a lining 20, which includes fire clay of the usual type, the upper portion of the lining being provided with an opening 21, which opening 21 is controlled by the pivoted closure 22, pivoted as at 23 to the upper section so that the closure 22 may be moved to permit the products of combustion or heat from the interior of the furnace to exhaust therethrough, to accomplish the cooling of the furnace.

Embedded within the lower portion of the lining .20, is a gas supply pipe 24, which supply pipe 24 has communication with the gas jets 25 which have their upper ends 26 extending toward the interior of the upper section, the same being disposed in spaced relation with each other, throughout the in terior surface of the upper section, and it is through these jets that heat is suppliedto the interior ofthe furnace. V

A gas supply pipe 27 has one of its ends disposed in close proximity with the furnace, the extreme end thereof being formed into the head 28, which head is preferably in the form of a hollow ball, apertured as at 29 to permit gas to pass therefrom, quantities of gas being confined within the ball head 28 to insure a steady and even supply to the gas jets employed in connection with the furnace. The connecting pipe 30 has its end 31 in communication with the interior of the supply pipe 24, the opposite end thereof being bent at right angles and formed into an inverted funnel-shaped member 32, which funnel-shaped member 32 is adaptedto embrace the .head'28, the walls of said funnel shaped member contacting with the exterior curved surface of the head 28 to provide an air-tight connectionbetween the funnel-shaped member 32 and head 28 at their points of connection.

. From the foregoing it will be seen that a novel form of coupling is provided between the gas supply pipe 27 and connecting pipe 30, so that the upper section of the furnace, Whichcarries the pipe 30, may be readily swung to an inoperative position, without the necessity of manually uncoupling the connection between the pipe 27 and pipe 30, the coupling and uncoupling of the pipes being purely automatic.

F orme'd, integrally with the rear wall 15 of the upper section, are the apertured ears 33 spaced apart to engage the ears 7 formed on the support 6, so that the samewill properly receive the pin 9, so that the upper section may be free to swing, or pivot with relation to the lower section of the furnace. Apertured ears 34, are also formed on the rear wall 15, the same being disposed adjacent the upper end thereof, and accommodate the pin 35, which pin provides means for securing one extremity of the flexible connecting element 36, which may be in the form of a cable the opposite end ofsaid member 36 being secured to the drum 37,- provided with a gear 38 on one end thereof, 'whichgear 38 meshes with the worm gear 39, formed on the operating arm 40, the arm 40, having connection with the wheel 41, whereby movement of the wheel 41 produces a relative movement of the worm gear 39 to cause the rotation of the gear 38 with the result that the flexible connecting member 36 is Wound around the drum 37. It follows that while the flexible connecting member 36 is being wound on the drum 37, the

upper section of the furnace is being tilted on the ears 33, with the result that the upper'section of the furnace is moved away from the lower section, so that ready access may be had to the interior of the furnace, inthe event that becomes necessary to remove the crucible 14, in which case, the operators grasp the arms 11 and 12 forming a part of the base and lift the same from the 1 lower section ofthe furnace.

- After the melt, the furnace is tilted rearwardly and the removal of the crucible is readily and easily accomplished by the use of the shank, or arms 11 and 12. From the foregoing it is obvious that this operation eliminates the old method of removing the crucible by the use of tongs or the like.

In the operation of the device to cause the heating of material, the metal to be melted is placed in the crucible 14, the upper section of the furnace is then moved to cover the upper portion of .thelower section thereof by unwinding the flexible member, "36 from the drum 37. The .gas jets arenow lighted through the opening 21, the supply of gas to the jets being regulated by suitable valve construction not shown.

- It might be further stated that the drum 37, together with its operating mechanism may be supported on any suitable means, such as the brick pillar 42, the same must however be disposed in proper relation With the furnace to permit of ready operation of the flexible connecting member 36.

Having thusdescribed the invention,

what is claimed is 1. In a crucible furnace, a lower section,

'an upper section hingedly connected tothe lower section, a removable crucible supporting member carried by the lower section, gas jets forming a part of the upper section, a supply pipe hav-ingcommunication with the gas jets, and a main supply pipe, means for automatically providing an air-tight con-' nection between the supply pipe and main supply pipe, when -the upper section is moved to its operative position, and means for moving the upper section with relation to the lower section.

2. In a'crucible furnace, a lower section,

and an upper section, means for pivotally moving the upper section. out of operative relation with thelower section, gas jets carried by the upper section, a supply p pe having communication with the gas jets,

and a lower section having a supporting member disposed on the upper surface thereof, said supporting member having recessed portions formed therein, a crucible support having laterally extending arms disposed within the recessed portions, means having connection with the supporting member for hingedly connecting the upper section thereto, means" for supplying gas to the upper section, and means for causing the upper section to swing out of operative relation with the lower section.

41-. In a crucible furnace, an upper section and a lower section, a metallic supporting member disposed on the lower section, and having spaced ears, spaced ears formed on the upper section, a pivot pin having connection with the ears of the respective sections for permitting pivotal movement of' the upper section with relation to the lower section, a crucible supporting member having connection with the lower section, means for supplying gas to the upper section, and

In testimony that I claim the foregoing 15 as my own, I have hereto affixed my signature 1n the presence of two'witnesses.

ALEXANDER c. OSBORN, JR.

Witnesses:

S. C. PAXTON, W. H. HIOKEL. 

